Patents Assigned to Rays Engineering Co., Ltd.
  • Patent number: 8662960
    Abstract: A method for polishing a vehicle wheel, the wheel includes a plurality of holes and a cylindrical rim. A polishing media storage tank holding abrasive media is vibrated to cause the medium to flow in an upwardly or downwardly vortex. The vehicle wheel is dipped into the medium such that the rim portion is disposed between the upward or downward flow of the medium, to polish the wheel.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: March 4, 2014
    Assignee: Ray's Engineering Co., Ltd
    Inventors: Shujiro Inatani, Tomoyuki Murakami
  • Patent number: 5537850
    Abstract: A process of making wheels in which a pair of rams press an initial mass of material for shaping a central disc part. A portion of the material is extruded out from between the interface of the rams. A roller unit having several rollers simultaneously forms rim parts by pressing the extruded material into desired shapes as it passes beyond the periphery of the rams.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: July 23, 1996
    Assignee: Rays Engineering Co., Ltd.
    Inventor: Shujiro Inatani
  • Patent number: 5531088
    Abstract: A rotary forging apparatus includes a first rotary ram (3a), a cylindrical second rotary ram (3b), a third rotary ram (3c) and a shaping roller device. The first ram (3a) and the cylindrical second ram (3b) face each other and rotate around the same axis. The third ram (3c) rotates around a slanting axis in the cylindrical second ram (3b). The third ram (3c) presses a workpiece against the first ram (3a) and makes a disc part of a product. The shaping roller, the second ram (3b) and a side of the first ram make the rim part. The outer surface of the second ram (3b) can keep tight contact with the workpiece during the forging because of the rotational symmetry of the second ram (3b). The overall contact stabilizes the position of the workpiece and reduces the size error of the product.
    Type: Grant
    Filed: November 9, 1994
    Date of Patent: July 2, 1996
    Assignee: Rays Engineering Co., Ltd.
    Inventor: Shujiro Inatani
  • Patent number: 5454248
    Abstract: A method of forming wheels such as automobile wheels that consist of a disc part and a peripheral rim part. The wheel's disc part is formed by forging. Then the rim part is shaped by rolling. An initial material is formed beforehand so as to combine a central disc part and a peripheral annular part. One ram has a pressing surface for shaping an outer side of the disc part and a peripheral surface for shaping an outer rim. The other ram has a pressing surface for shaping an inner side of the disc part and a peripheral surface for shaping an inner rim. The rams rotate on their axes synchronously in the same direction and press the central disc part for shaping the disc part of the wheel. At the same time or afterward a shaping roller forms a rim part by pressing the peripheral part from the side.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: October 3, 1995
    Assignee: Rays Engineering Co., Ltd.
    Inventor: Shujiro Inatani
  • Patent number: 4981390
    Abstract: A tolerance ring is provided with radial projections to achieve unidirectional or bidirectional axial retention, or angular retention relative to at least one abutting cylindrical surface. Spaced tabs, dimples or a continuous flange formed at one or both axial ends of the ring provide the axial retention function by engaging with one or two shoulders on the abutting cylindrical surfaces, and a radially projecting tab at a lateral end of the split ring provide the angular retention function by engaging in a groove in the abutting cylindrical surface. The axial and angular retention projections can project radially inwardly or outwardly depending on the particular application, and the axial and angular retention projections can be used individually or in combination as desired.
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: January 1, 1991
    Assignee: The Ray Engineering Co., Ltd.
    Inventors: Arthur A. Cramer, Jr., Brian S. Cramer
  • Patent number: D350088
    Type: Grant
    Filed: June 30, 1993
    Date of Patent: August 30, 1994
    Assignee: Rays Engineering Co., Ltd.
    Inventor: Shujiro Inatani
  • Patent number: D350922
    Type: Grant
    Filed: June 30, 1993
    Date of Patent: September 27, 1994
    Assignee: Rays Engineering Co., Ltd.
    Inventor: Shujiro Inatani